Induction machine direct torque control singlephase. Simulink implementation of direct torque control drive for. Simulation results for working point 4, which were performed in the same. In this project, a dtc model has been developed and tested using a matlabsimulink package. A new approach to simulate complete direct torque control of induction motor drive systems using matlab simulink power system blockset, xilinx system generator has been presented. These two control strategies are different on the operation principle but their objectives are the same. Direct torque control of permanent magnet synchronous motor. Pdf direct torque control based constant volthertz technique was the effortless speed control method for the three phase induction motor drives. Highlights studying the classical direct torque performance.
Simulation results have shown the validity and high accuracy of the. The performance of this control method has been demonstrated by simulations performed using a versatile simulation package, matlabsimulink. Evaluation of the developed dtc model under the torque control mode. In first scheme, a torque flux sliding mode controller is used. To estimate the torque and flux, the induction machine direct torque control block discretizes the machine voltage equations in the stationary reference frame using the backward euler method. Matlab simulink model of direct torque control of three phase induction motor the figure. The direct torque controller generates the inverter pulses. A comparitve study between vector control and direct. Pdf the modeling and simulation of a permanent magnet synchronous motor with direct torque control based on matlab simulink aslam shaikh academia. Pdf simulink model of direct torque control of induction.
The process of the building simulation system is discussed in detail. The use of permanent magnet synchronous motor combined with direct torque control offers many opportunities such as quick, robust response and highperformance operations, which is desired for servo and traction applications in electric vehicles and wind turbines. This paper introduces the modeling of the direct torque control dtc system of permanent magnet synchronous motor based on matlab simulink. The speed control loop outputs the reference electromagnetic torque and stator flux of the machine. A new approach to simulate complete direct torque control of induction motor drive systems using matlabsimulink power system blockset, xilinx system generator has been presented. Add a dc voltage source block from the simscape electrical specialized power systems fundamental. Induction motor, mathematical model, voltperhertz controller, control, matlab simulink.
Pdf direct torque control of im using pid controller. In first scheme, a torqueflux sliding mode controller is used. Matlab simulink implementation of switched reluctance motor. Abstractdirect torque control is a control technique used in ac drive systems to obtain high performance torque control. Direct torque control design for three phase induction motor. Design and simulation of field oriented control and direct torque control for a permanent magnet synchronous motor with positive saliency anders kronberg the researchers at the department of electricity at uppsala university has recently entered the field of electric motor design, however no real knowledge of motor.
Torque ripple reduction based direct torque control for. The induction machine direct torque control block implements an induction machine direct torque. A pibased speed controller supplies the torque reference. In conventional dtc pi controller is used in the speed controller. Modeling and simulation of direct torque control induction motor. The independence of torque and stator flux control has been confirmed. Direct torque control of ac machines high performance. Simulation results the induction motor modeling and sensorless control of induction motor is done by using simulink. Pdf modeling and simulation of direct torque control induction. They aim to control effectively the torque and flux. In direct torque control it is possible to control directly the stator flux and the torque. In this paper, proportionalintegral pi controller has been presented to improve the system performance which gives better torque and flux response and also reduces the undesirable torque ripple. Matlab simulation of the proposed speed control method for 1hp induction motor was done to verify the performance of the proposed method.
This approach gives many advantages when the control algorithm is to be implemented for an fpgabased system. Simulation results presented in this paper show the torque,flux linkage and stator current ripple decreases with the proposed svmdtc algorithm. The choice of direct torque control from these methods gives advantages such as. Asynchronous machine direct torque control simulink. This paper describes an investigation of the direct torque control dtc for permanent magnet synchronous motor pmsm drive. Simulink model of direct torque control of induction machine. Simulation results have shown the validity and high accuracy of the proposed model. It is considered as an alternative to the field oriented control foc or vector control technique. This example shows how to control an asynchronous machine asm using the directtorque control method. Direct torque control dtc technique is one of a high performance control system of an ac motor drive, which was proposed after the vector oriented control scheme during the resent 25 years.
Simulation of direct torque control of induction motor using simulink, simplorer and maxwell software conference paper pdf available august 2015 with 2,023 reads how we measure reads. Simulation of direct torque control of induction motor. The block scheme of the investigated direct torque control with space vector modulation dtcsvm for voltage source inverter vsi fed pmsm is presented in figure. The simulink diagram of sensorless vector control of induction motor using direct synthesis of dynamic state equations is shown in figure 5. Matlab simulink implementation of switched reluctance. This example shows how to control an asynchronous machine asm using the direct torque control method. Vector control and direct torque control of induction motor using matlab simulink submitted by fathalla eldali department of electrical and computer engineering for the degree of master of science colorado state university fall 2012 1. Mar 15, 2012 modified direct torque control of induction machine with constant switching frequency direct torque control of sinusoidal permanent magnet synchronous motors spmsm references. Modeling and simulation of fpga based direct torque. The proposed scheme is validated using simulation results using matlab simulink environment. High performance control of ac drives with matlabsimulink models.
Project report on direct torque control of permanent magnet synchronous motor as without his constant motivation and support during my work, this would not have been possible. Index terms electric machine, induction motor, simulink, simplorer, maxwell. The direct torque controller dtc is built with two types of modulation, hysteresis modulation and space vector modulation svm. Matlab simulation for speed control of three phase. This involves calculating an estimate of the motors magnetic flux and torque based on. Pdf the modeling and simulation of a permanent magnet. This paper introduces the modeling of the direct torque controldtc system of permanent magnet synchronous motor based on matlabsimulink. Modeling and simulation of direct torque control induction. Simulation of direct torque controlled induction motor drive by. Direct torque control dtc is one of the most excellent control strategies of torque control in induction machine. Feb 22, 2018 dtc induction motor drive matlab simulink. Doubleclick the function block, and enter the expression for torque as a function of speed.
Pi controller is more suitable in steady state condition and for linear system. The performance of an induction motor under the classical direct torque control method and improved scheme have been studied and confirmed by simulation using matlab. This drive features closedloop speed control using hysteresisband torque and flux controllers. To evaluate the effect of flux and torque hysteresis band. The dtc induction motor drive ac4 block represents an improved scalar control drive for induction motors with direct torque and flux control. The foc aims to control the current vector and dtc aims to control the torque producing ux vector.
Subsequent improvements in processor computational power, application programming, and communication interfaces have continually enabled higher dtc performance, providing premium motor control for a broad range of applications. The direct torque and flux controller dtc directly controls the torque and stator flux of a machine, using inverter voltage vectors typically selected from an optimal switching table. This diagram shows the direct torque control architecture for singlephase machines the torque and flux estimation is based on machine voltage equations. This involves calculating an estimate of the motors magnetic flux and torque based on the measured voltage and current of the motor. Simulink model of direct torque control of induction machine article pdf available in american journal of applied sciences 588 january 2008 with 3,404 reads how we measure reads. Digital signal processor, direct field oriented control, direct signal processor. In the second scheme, a torqueflux diagonal recurrent neural network is used. The whole drive system is simulated in matlabsimulink based.
In addition to this the simulink model of switched reluctance motor with direct torque control technique is designed and tested through matlabsimulink software. Niu et al comparative evaluation of direct torque control strategies for permanent magnet synchronous 1409 systemforsvmhasbeenproposedin22. Design of direct torque controller of induction motor dtc. Vf control, field oriented control, and direct torque control. The step by step subsystem model of the direct torque control method is shown figure. In this paper, comparison between the matlabsimulink and ansys maxwell simplorer cosimulation is done for speed control of induction motor im based on the direct torque control strategy. Connect the output of the function block to the torque input port, tm, of the machine block. The induction machine direct torque control single phase block implements a singlephase induction machine direct torque control structure. Modelling and simulation of armaturecontrolled direct. Singlephase induction machine direct torque control. Direct torque control direct torque control dtc method is used in variable frequency drives to control the torque and thus finally the speed of threephase ac electric motors.
A 6 kw three phase induction motor has been used in order to run and evaluate the developed model. The aim is to establish relationship between the speed of dc motor and the load torque at different voltages as well as investigating the performance of closedloop systems when different voltages are applied to the. Direct torque control dtc is one of the most excellent control. Implement direct torque and flux control dtc induction. Induction machine dtc simulink mathworks america latina. Improvements in direct torque control of induction motor for wide. Due to its simplicity of use, matlab simulink is used to simulate the dynamic model of im and. An efficient method of induction motor control is the direct torque control dtc.
Simulink model of direct torque control of induction machine core. The performance of the classical direct torque control, the torqueflux sliding mode controller and the torqueflux diagonal. Direct torque control dtc has emerged over the last two decades as a suitable alternative to the wellknown field oriented control foc or vector control technique for electric drives mainly due to its simple control scheme, low computational time and reduced parameter sensitivity. Theoretical background for both methods is explained. Chapter 4 this chapter entitled simulation result of the developed direct torque control model a numerical simulation has been perform and the validity of the developed. Thus, their control techniques have received a lot of interest. Pdf simulink model of direct torque control of induction machine sebastian eduardo torres fuentes academia. This simulink schematic consists of torque hysteresis controller, flux hysteresis. Suggesting two schemes to improve the direct torque performance.
Direct torque control of permanent magnet synchronous. Direct torque control of three phase induction motor using matlab. Simulink model of direct torque control of induction machine h. It is proven by equations that the increase of electromagnetic torque is proportional to the increase of the angle between the stator flux and the rotor flux linkage. The performance of the classical direct torque control, the torque flux sliding mode controller and the torque flux diagonal. This thesis project studies and compares two of the most commonly used electric driving methods of induction motors im. Conventional direct torque control of induction motor cdtc. Comparative study between vector control and direct torque control of induction motor using matlab simulink. These methods, which have been used for three decayed are field orientation control foc and direct torque control dtc.
Add an interpreted matlab function block from the simulink userdefined functions library. Comparative study between vector control and direct torque control. Direct torque control of induction motor using fuzzy logic. The internal structure of the predictive torque and flux controller is shown in figure. Direct torque control, permanent magnet synchronous motor, space vector modulation 1 introduction direct torque control was introduced by i. This chapter explain the dtc and mathematical equation is use in developement of dtc using matlabsimulink package. Direct torque control based constant volthertz technique was the effortless speed control method for the three phase induction motor drives. Pdf direct torque control dtc is one of the most excellent control strategies of torque controlin induction machine.
To develop a direct torque control induction motor dtc model using a matlab simulink package. In this project, a dtc model has been developed and tested using a matlab simulink package. But since dtc along with im is mostly nonlinear, fuzzy controller. The discretetime equations for stator fluxes in the frame are. Digital signal processor, direct field oriented control, direct signal processor, direct torque control, pulsewidth modulation. Simulink model of direct torque control of induction.
This approach gives many advantages when the control algorithm is to. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. The parameters like speed and torque are represented graphically. Noguchi 1 as a new performant control strategy for induction motor drives fed by voltage source inverters vsi. The major problem that is usually associated with dtc drive is the high torque ripple. Direct torque control of sinusoidal permanent magnet synchronous motors spmsm references. Direct torque control of induction motor with fuzzy minimization torque ripple fatiha zidani. The discretetime voltage equations using the backward euler discretization method, are. Induction motors are currently used in many industrial applications. The aim is to establish relationship between the speed of dc motor and the load torque at different voltages as well as investigating the performance of closedloop systems when different voltages are applied to the armature circuit of the motor when a constant voltage. In the second scheme, a torque flux diagonal recurrent neural network is used. In this paper, speed control of an induction machine based on dtc strategy has been developed and a. A comparitve study between vector control and direct torque control of induction motor using matlab simulink submitted by fathalla eldali department of electrical and. Direct torque control of three phase induction motor using.
Have a look at the simulink model direct torque control of an induction motor by syed abdul rahman kashif as a crossreference where the author has modelled the electrical and mechanical systems separately the way you want. Pdf simulink model of direct torque control of induction machine. Three phase induction motor using direct torque control by. The following figures present the block diagram of the controller for the two types of modulation. When abb introduced its first direct torque control ac drive to the market in 1995, dtc was already a leading technology. High performance direct torque control schemes for an ipmsm. Direct torque control of permanent magnet synchronous motors. I truly appreciate and value his esteemed guidance and encouragement from the beginning to the end of this report. Design and simulation of field oriented control and direct. The direct torque control strategy does not require speed or rotor position. Modeling and simulation of fpga based direct torque control. Block diagram of the proposed drive system it relies on the principle that the torque and the magnitude of the stator flux are directly proportional with the ratio between the magnitude of the stator voltage and the stator frequency as given in 1 and 2 2. Sensorless control of induction motor using simulink by. High performance direct torque control schemes for an.
465 358 584 655 1279 1451 1145 919 1040 1428 1243 414 208 738 425 531 1005 1369 651 606 1337 776 1350 1446 1016 143 1124 948 1285 1374 789 42 631 78